在ios Objective-c的mapview上添加带有多个图像的多个注释？

#import <MapKit/MapKit.h>

@interface ViewController () <MKMapViewDelegate>

@property (nonatomic, strong) MKMapView *mapView;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    // 创建MapView对象
    self.mapView = [[MKMapView alloc] initWithFrame:self.view.bounds];
    self.mapView.delegate = self;
    [self.view addSubview:self.mapView];
    
    // 创建多个Annotation对象
    MKPointAnnotation *annotation1 = [[MKPointAnnotation alloc] init];
    annotation1.coordinate = CLLocationCoordinate2DMake(40.7128, -74.0060);
    annotation1.title = @"New York";
    annotation1.subtitle = @"The Big Apple";
    
    MKPointAnnotation *annotation2 = [[MKPointAnnotation alloc] init];
    annotation2.coordinate = CLLocationCoordinate2DMake(34.0522, -118.2437);
    annotation2.title = @"Los Angeles";
    annotation2.subtitle = @"The City of Angels";
    
    // 添加注释到MapView中
    [self.mapView addAnnotations:@[annotation1, annotation2]];
}

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation {
    if ([annotation isKindOfClass:[MKPointAnnotation class]]) {
        static NSString *reuseIdentifier = @"AnnotationView";
        MKAnnotationView *annotationView = [mapView dequeueReusableAnnotationViewWithIdentifier:reuseIdentifier];
        
        if (annotationView == nil) {
            annotationView = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:reuseIdentifier];
            annotationView.canShowCallout = YES;
        } else {
            annotationView.annotation = annotation;
        }
        
        // 设置注释的图像
        annotationView.image = [UIImage imageNamed:@"pin_icon"];
        
        return annotationView;
    }
    
    return nil;
}

@end